11932161 has 4 divisors (see below), whose sum is σ = 15909552. Its totient is φ = 7954772.

The previous prime is 11932153. The next prime is 11932201. The reversal of 11932161 is 16123911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16123911 = 3 ⋅5374637.

It is a cyclic number.

It is not a de Polignac number, because 11932161 - 2³ = 11932153 is a prime.

It is a super-2 number, since 2×11932161² = 284752932259842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11930161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988691 + ... + 1988696.

It is an arithmetic number, because the mean of its divisors is an integer number (3977388).

Almost surely, 2^11932161 is an apocalyptic number.

It is an amenable number.

11932161 is a deficient number, since it is larger than the sum of its proper divisors (3977391).

11932161 is an equidigital number, since it uses as much as digits as its factorization.

11932161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977390.

The product of its digits is 324, while the sum is 24.

The square root of 11932161 is about 3454.2960208992. The cubic root of 11932161 is about 228.5106092462.

The spelling of 11932161 in words is "eleven million, nine hundred thirty-two thousand, one hundred sixty-one".